xavier_internal/deserialize/
doctype.rs

1use quick_xml::events::Event;
2use quick_xml::Reader;
3use crate::deserialize::error::PError;
4
5#[macro_export]
6macro_rules! doctype {
7    ($expr:expr) => { xavier::deserialize::doctype::parse($expr) };
8}
9
10pub fn parse(xml: &str) -> Result<(String, String), PError> {
11    let mut reader = Reader::from_str(xml);
12    loop {
13        match reader.read_event() {
14            Err(error) => { return Err(PError::new(&format!("Error at position {}: {:?}", reader.buffer_position(), error))) },
15            Ok(Event::Eof) => { break },
16            Ok(Event::Start(_)) => { break },
17            Ok(Event::End(_)) => {},
18            Ok(Event::Empty(_)) => {},
19            Ok(Event::Decl(_)) => {},
20            Ok(Event::PI(_)) => {},
21            Ok(Event::DocType(event)) => {
22                let doc_type = String::from_utf8(event.to_vec())?;
23                return if let Some((name, file)) = doctype_obj(&doc_type) {
24                    Ok((name, file))
25                } else {
26                    Err(PError::new("Unsupported content"))
27                }
28            },
29            Ok(Event::Text(_)) => {},
30            Ok(Event::Comment(_)) => {},
31            Ok(Event::CData(_)) => {},
32        };
33    };
34    Err(PError::new("Doctype not found!"))
35}
36
37fn doctype_obj(input: &str) -> Option<(String, String)> {
38
39    let parts: Vec<&str> = input.trim().split_whitespace().collect();
40
41    if parts.is_empty() { return None; }
42
43    let tag_name = parts[0].to_string();
44    let file = parts.iter().find(|&&part| part.starts_with("\""));
45
46    match file {
47        Some(file) => {
48            let file = file.trim_start_matches('"').trim_end_matches('"');
49            Some((tag_name, file.to_string()))
50        }
51        None => None,
52    }
53}
xavier_internal/deserialize/doctype.rs

xavier_internal/deserialize/
doctype.rs
